Katanagatari is a Japanese light novel series written by Nisio Isin and illustrated by Take. The series follows Yasuri Shichika, the seventh head of the Kyotoryuu school of martial arts, and his journey with strategist Togame to collect twelve unique swords. Set in the Edo period, the series blends action, adventure, and dialogue-driven storytelling, showcasing a unique art style and narrative structure. It was adapted into a 12-episode anime series, with each episode corresponding to a novel chapter.